Well, I've been off the forum for a good bit. But at any rate, I managed to get back in a silvy! The plans is to swap in a 5.3 in place of my 4.8. So far what I have is 2002 5.3 block cleaned up and a set of 4.8 pistons to run a high compression 5.3. I bought a Brain Tooley Truck cam stage 2 and LS6 blue springs. The heads are GM 706 heads ported and polished. Got a set of speed engineering stainless long tubes along with a Wye pipe. I'm still in the process of getting more odds and ends for it. Hopefully I'll start getting the 5.3 together here a few weeks. I plan on dyno my truck on a chassis dyno with the 4.8. Then after the 5.3 is installed and tuning dyno it again. I'll post updates and pictures of the build and install as it goes.